Atoms of the same element with varying number of neutrons are called

A hockey player hits a puck along the ice, giving it an initial speed of 3.3 meters per second. If there is no friction between the puck and the ice, what will the puck's speed be after 1.6 seconds? A. 3.3 meters per second B. 5.

An element's atomic number is 54. how many protons would an atom of this element have

Which part of the sound wave influences how loud or quiet a sound wave is

A student adds solution "X" to a beaker of water, instantly the student notices that the beaker becomes warm to the touch. Which of the following best describes the type of reaction the student witnessed?

If a string vibrates at the fundamental frequency of 528 Hz and also produces an overtone with a frequency of 1,056 Hz, this overtone is the A. second harmonic. B. third harmonic. C. fourth harmonic. D. first harmonic.

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.

On arrival at a vehicle collision, you observe a small fire in the engine compartment. A bystander is attempting to smother the fire with a jacket as you approach with an A-B-C extinguisher from your ambulance.

Gertrude writes a short story in which the main character must enter a nuclear-powered spaceship's engine room that has lost its shielding in order to prevent the engine from flooding the rest of the ship with radiation.

PV = nRT, is the a. equation of state of an ideal gas b. theorem of equipartition of energy c. second law of thermodynamics

Which conducting electricity has the most harmful effects?